HI!! J have notebook ACER 1640Z.My question is how to corectly format my battery.It have 2000 mAh,if it means something.THANKS!!! Second question,notebook comes with INTEL GRAPHIC MEDIA ACCELERATOR 900.What are the specifications of this graphic card??? Can J play some new games???

A laptop battery does not need formatting. It does not hold any information. As for your video card, most integrated video cards are not powerful enough to run intensive 3D games - only some lower requirements games will run on this laptop.

Thank you!!! So' J just need to charge my battery(in manual it says 3,5h) and use it??? If battery is always in my notebook and J use my notebook with AC adapter,battery will somethimes charge.Does it damage my battery???

I think maybe the OP means "conditioning" the battery - in which case there should be instructions in the manual for the notebook, but I don't believe there's any special measures needed, apart from letting the battery charge fully for the specified amount of hours.